Photoreactions of N-Tosyldihydrodiazaazulanones to Form Diazaazulaones and Ionic Pairs between p-Toluenesulfonate Anion and Tropylium Ions
作者:Katsuhiro Saito、Tadayuki Doi、Hiroyuki Ishiguro、Michie Sato
DOI:10.3987/com-99-8569
日期:——
Photoreactions of 3-Tosyl- and 6-Tosyl-dihydro-1,3-diazaazulanones to Form 1,3-Diazaazulanones and Ionic Pairs between p-Toluenesulfonate Anion and 1,3-Diazadihydroazulanone Cations
作者:Katsuhiro Saito、Tomoko Kunisada、Hiroyuki Ishiguro、Michie Sato、Tadayuki Doi
DOI:10.3987/com-01-9341
日期:——
A solvent effect was found on the photoreactions of 1-aryl-3-tosyldihydro-1,3-diazaazulanones with a low pressure mercury lamp. Thus, ion pairs between p-toluenesulfonate anion and the corresponding 1-aryl-1,3-diazadihydroazulanone cations were afforded by the reactions in THF. On the other hand, the corresponding 1-aryl-1,3-diazaazulanones were formed by the reactions in the other solvents. The analogous photoreactions with 1-aryl-6-tosyldihydro-1,3-diazaazulanones afforded the corresponding 1-aryl-1,3-diazaazulanones.
Construction of Polycyclic Indole Derivatives via Multiple Aryne Reactions with Azaheptafulvenes
作者:Zhen Wang、Yesu Addepalli、Yun He
DOI:10.1021/acs.orglett.7b03789
日期:2018.2.2
2]/aryl–ene tandem reaction between azaheptafulvenes and arynes has been developed, leading to the formation of cyclohepta[b]indoles in a single step with good yield. In addition, employment of excess arynes provides a [8 + 2]/aryl–ene /[6 + 2] tandem reaction to synthesize polycyclic oxacyclohepta[b]indoles. This is the first time that azaheptafulvenes have been employed in tandem reactions with arynes.
已开发了氮杂七叶烯和芳烃之间的有效[8 + 2] /芳基-烯串联反应,导致一步形成环庚[ b ]吲哚并具有良好的收率。另外,使用过量的芳烃可提供[8 + 2] /芳基-烯/ [6 + 2]串联反应,以合成多环氧杂环庚[ b ]吲哚。这是氮杂七富烯首次与芳烃一起用于串联反应。